FI212B245027-T

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RF Filters

A Radio Frequency Filter, commonly known as an RF filter, is an important electronic component widely used for tuning and filtering radio frequency signals. RF filters are typically composed of reactive elements such as inductor and capacitor that can be configured in various tuning networks, including low-pass, high-pass and band-pass. The FI212B245027-T is a high-performance band-pass filter specifically designed for wireless communication and radar system applications.

FI212B245027-T Application Field

The FI212B245027-T is a low-profile 20MHz-2700MHz band-pass filter featuring a low insertion loss and high power handling, suitable for a variety of RF filtering applications. This filter\'s excellent performance makes it ideal for a wide range of wireless communication and radar system applications.

Specifically, the FI212B245027-T can be used as a front-end filter in Wi-Fi, LTE and 5G base-stations or in Wi-Fi routers, repeaters, and access points for low-noise RF signal filtering and noise reduction. The filter also provides superior benchmark phase and amplitude response in more advanced installations, such as 5G remote radio heads and massive multiple-input multiple-output systems (MIMO).

FI212B245027-T Working Principle

As a band-pass filter, the FI212B245027-T\'s job is to pass a specific bandwidth of frequencies and reject all other frequencies outside the passband. To do this, it uses a combination of inductors and capacitors to create a resonance circuit between the filter\'s input and output ports. The inductors and capacitors form a two-pole tunable unloaded filter with multiple resonance frequency points.

The inductors are responsible for the low-frequency filtering while the capacitors are responsible for the high-frequency filtering. By altering the values of the inductor and the capacitors, the filter can be tuned to pass a specific frequency range or bandwidth. The combined filter circuit also provides excellent out-of-band rejections, reducing the unwanted frequencies. Additionally, the filter is designed to operate in balanced mode, further providing high channel isolation and stable performance even under extreme environmental conditions.

In summary, the FI212B245027-T is a high-quality band-pass filter designed for a wide range of wireless systems. With its low insertion loss and high power handling, the filter provides excellent performance for Wi-Fi, LTE, and 5G base-stations, antennas, and MIMO installations. The filter\'s tunable circuit is capable of rejecting unwanted frequencies and providing superior performance even under tough environmental conditions.

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